expressive-angular

Material 3 Expressive components for Angular, built on Angular Material's M3 tokens and the CDK. Jetpack Compose Material3 is the reference for sizes, shapes, motion and behaviour.

Try the components in the playground.

Usage

npm install @adam01230/expressive-angular

Include the styles once, next to your Angular Material theme:

@use '@adam01230/expressive-angular' as exp;

html {
  @include exp.tokens; // --exp-motion-* springs as linear() easings with durations, --exp-corner-* sizes
  @include exp.material-buttons; // every Angular Material button and icon button gets Compose's shapes and padding
  @include exp.icon-button;
  @include exp.button;
  @include exp.button-group;
  @include exp.split-button;
  @include exp.floating-toolbar;
  @include exp.docked-toolbar;
  @include exp.segmented-list; // children of .exp-segmented-list become Compose's segmented list items
  @include exp.card; // .exp-card, .exp-card-elevated, .exp-card-outlined
  @include exp.menu; // every mat-menu gets Compose's Expressive menu shapes
  @include exp.navigation-bar; // a and button children of .exp-navigation-bar become Compose's navigation bar items
  @include exp.navigation-rail; // the same for .exp-navigation-rail, collapsed or .exp-navigation-rail-expanded
  @include exp.search; // exp-search
}

The buttons are directives on Angular Material's, so focus, ripple and touch target stay Material's:

<button mat-icon-button expIconButton aria-label="History" [selected]="open()"><mat-icon>history</mat-icon></button>
<button mat-icon-button expIconButton appearance="tonal" aria-label="Send"><mat-icon>send</mat-icon></button>
<button mat-icon-button expIconButton appearance="filled" size="l" width="wide" shape="square" aria-label="Play">
  <mat-icon>play_arrow</mat-icon>
</button>

<exp-button-group aria-label="Billing" connected [(value)]="interval">
  <button matButton="tonal" expButton value="month">Monthly</button>
  <button matButton="tonal" expButton value="year">Yearly</button>
</exp-button-group>

<exp-split-button size="m">
  <button matButton="filled"><mat-icon>edit</mat-icon> Edit</button>
  <button matButton="filled" aria-label="More" [matMenuTriggerFor]="menu">
    <mat-icon>keyboard_arrow_down</mat-icon>
  </button>
</exp-split-button>

<exp-floating-toolbar aria-label="Formatting" vibrant [expanded]="editing()">
  <button mat-icon-button expIconButton expToolbarLeading aria-label="Undo"><mat-icon>undo</mat-icon></button>
  <button mat-icon-button expIconButton [morph]="false" aria-label="Bold" [selected]="bold()" (click)="toggleBold()">
    <mat-icon>format_bold</mat-icon>
  </button>
  <button matFab expToolbarFab aria-label="Done"><mat-icon>check</mat-icon></button>
</exp-floating-toolbar>

<exp-docked-toolbar aria-label="Message">
  <button mat-icon-button expIconButton aria-label="Archive"><mat-icon>archive</mat-icon></button>
  <button mat-icon-button expIconButton aria-label="Delete"><mat-icon>delete</mat-icon></button>
</exp-docked-toolbar>

<mat-menu #view="matMenu">
  <exp-menu-group label="Sort by">
    <button mat-menu-item role="menuitemradio" aria-checked="true" class="exp-menu-item-selected">Date</button>
    <button mat-menu-item role="menuitemradio" aria-checked="false">Name</button>
  </exp-menu-group>
  <exp-menu-group>
    <button mat-menu-item>
      <mat-icon>refresh</mat-icon><span>Refresh</span><span class="exp-menu-item-trailing">⌘R</span>
    </button>
  </exp-menu-group>
</mat-menu>

<exp-loading-indicator aria-label="Loading" />
<exp-loading-indicator contained aria-label="Saving" />

<exp-linear-progress wavy [value]="uploaded" aria-label="Upload" />
<exp-circular-progress wavy aria-label="Loading" />

<exp-slider><input type="range" aria-label="Volume" min="0" max="1" formControlName="volume" /></exp-slider>
<exp-slider vertical reverse><input type="range" aria-label="Level" formControlName="level" /></exp-slider>
<exp-range-slider>
  <input type="range" aria-label="From" min="0" max="100" formControlName="from" />
  <input type="range" aria-label="To" min="0" max="100" formControlName="to" />
</exp-range-slider>

<nav class="exp-navigation-bar">
  <a routerLink="/" routerLinkActive ariaCurrentWhenActive="page"><mat-icon>home</mat-icon><span>Home</span></a>
  <a routerLink="/saved" routerLinkActive ariaCurrentWhenActive="page"
    ><mat-icon>favorite</mat-icon><span>Saved</span></a
  >
</nav>

<div class="exp-segmented-list">
  <div>Notifications</div>
  <a href="/language">Language</a>
  <div>
    <a class="exp-segmented-list-action" href="/orders/2">Order 2</a>
    <button matButton="outlined">Received</button>
  </div>
</div>

Import ExpIconButton, ExpButton, ExpButtonGroup, ExpSplitButton, ExpFloatingToolbar, ExpToolbarFab, ExpDockedToolbar, ExpLoadingIndicator, ExpMenuGroup, ExpLinearProgress, ExpCircularProgress, ExpSlider and ExpRangeSlider from @adam01230/expressive-angular. An icon button's appearance is standard, filled, tonal or outlined; size runs from xs to xl, width is narrow, uniform or wide, and shape is round or square. [morph]="false" keeps a toggle's shape when it is pressed or selected. A split button takes two Material buttons of the same appearance (filled, tonal, elevated or outlined); the trailing one becomes a pill and flips its icon while its menu is open. A floating toolbar is horizontal or vertical, standard or vibrant; while expanded is false its expToolbarLeading and expToolbarTrailing items fold away, or, with an expToolbarFab, the whole bar folds into the FAB. Icon buttons inside it take the toolbar's content colour; Compose's toolbars use toggles that keep their shape, hence [morph]="false". A docked toolbar spans the bottom of the screen and pads itself by the safe-area insets; its arrangement is space-between or fixed (centred, 32px apart), and --exp-docked-toolbar-container and --exp-docked-toolbar-content change its colours. A linear progress indicator takes a value from 0 to 100, or none while the wait is unknown; wavy turns its indicator into the expressive wave. contained puts the loading indicator on a round PrimaryContainer, as Compose's ContainedLoadingIndicator. A circular progress indicator works the same as the linear one and is 40px, or 48px when wavy; give it another width and height to resize it. A slider draws Compose's Slider around a native <input type="range">, which keeps the value, forms binding, label and keyboard; without a step attribute it is continuous, with one it snaps and shows a dot per step. A vertical slider fills its height and runs from the top down, or from the bottom up with reverse. A range slider takes two such inputs with the same min, max and step, the start first; a press moves the nearer thumb, and neither passes the other. With exp.menu, every mat-menu looks like Compose's Expressive menu: one rounded group with inset items. Put the items into exp-menu-groups to split a menu into separate groups, each with an optional label. The class exp-menu-item-selected marks the selected item; set role and aria-checked yourself. A trailing icon or shortcut goes into a .exp-menu-item-trailing span after the label. --exp-menu-container changes the menu colour. A button group also takes [formControl] or formControlName in place of [(value)]. Every child of .exp-segmented-list becomes a segmented list item: 2px apart, small corners, large outer corners on the first and last. Lay out the item's content yourself; the list sets its shape, padding, height and colours. --exp-segmented-list-container changes the items' Surface colour, for a list that sits on a Surface page. An item that is an a[href] or a button is clickable as a whole and takes Compose's hover, focus and pressed states. When an item holds buttons of its own, keep it a div and give its main link or button the class exp-segmented-list-action: its click area then covers the whole item, and the other buttons stay clickable on top. With exp.card, .exp-card, .exp-card-elevated and .exp-card-outlined draw Compose's filled, elevated and outlined card: the container, its corners and colours; lay out and pad the content yourself. A card that is an a[href] or a button is clickable and takes Compose's hover, focus and pressed states and elevation. A card with buttons of its own stays a div and gives its main link the class exp-card-action, as in a segmented list. --exp-card-container changes the container colour. With exp.navigation-bar, every a or button in a .exp-navigation-bar becomes a navigation bar item (Compose's ShortNavigationBar): the first child is the icon, the rest the label. The item with aria-current is selected, so routerLinkActive with ariaCurrentWhenActive="page" drives it. The bar pads itself by the bottom safe-area inset; --exp-navigation-bar-container changes its colour. exp.navigation-rail does the same for a .exp-navigation-rail (Compose's WideNavigationRail): 96px wide with the label under the icon, or, with .exp-navigation-rail-expanded, as wide as its widest item (220px to 360px) with the label beside the icon. A .exp-navigation-rail-header child, such as the button that toggles the class, sits above the items, centred on their icons. The rail fills its parent's height; --exp-navigation-rail-container changes its colour. exp-modal-navigation-rail takes the place of a navigation drawer (Compose's ModalWideNavigationRail with hideOnCollapse): bind [(open)] and it slides an expanded rail in from the start edge over a scrim, as a modal dialog that traps focus and closes on Escape or a click on the scrim. Put the same header and items into it as into a .exp-navigation-rail, and close it yourself after a navigation. --exp-modal-navigation-rail-container changes its colour. exp-search is Compose's search bar: a pill that shows [(query)] or the placeholder and, when clicked, opens the search as a modal dialog with the input field and the content you put inside exp-search, such as result links. By default the field stays in place and the results drop down below it; [fullScreen]="true" fills the screen and adds a back button, as on phones. [(expanded)] tells whether it is open, Enter emits (searched) with the query, and Escape, the scrim and the back button close it. --exp-search-container changes its colour. The motion tokens work on their own too:

.thing {
  transition: transform var(--exp-motion-fast-spatial-duration) var(--exp-motion-fast-spatial);
}

Development

npm install
npm start            # showcase on http://localhost:4200
npm run build        # library to dist/expressive-angular, then the showcase
npm run test:ci      # unit tests, single run
npm run lint
npm run format:check

Releasing

Bump projects/expressive-angular/package.json, merge, then run the Release workflow on main (Actions → Release → Run workflow). It builds the library, publishes it to npm as @adam01230/expressive-angular and creates the GitHub release v<version>. Publishing needs no token: npm trusts this repository's release.yml (npm package settings → Trusted Publisher).

License

MIT. Values taken from Jetpack Compose (Apache 2.0) are credited in NOTICE.